Commodore Capital LP
· New
Change
+1.9M
Date
Q1 2026
KP
| Investor | Type | Est. change | Change | Δ Own | Date | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Commodore Capital LP
· New
Change
+1.9M
Date
Q1 2026
|
Commodore Capital LP | New· Q1 2026 | – | +1.9M | – | Q1 2026 | |||||
|
Ra Capital Management, L.P.
· New
Change
+1.9M
Date
Q1 2026
|
Ra Capital Management, L.P. | New· Q1 2026 | – | +1.9M | – | Q1 2026 | |||||
|
Adage Capital Partners Gp, L.L.C.
· Added
Change
+1.4M
Date
Q1 2026
|
Adage Capital Partners Gp, L.L.C. | Added· Q1 2026 | – | +1.4M | – | Q1 2026 | |||||
|
Goldman Sachs Group Inc
· New
Change
+948K
Date
Q1 2026
|
Goldman Sachs Group Inc | New· Q1 2026 | – | +948K | – | Q1 2026 | |||||
|
Opaleye Management Inc.
· Exited
Change
−930K
Δ Own
−100.0%
Date
Q1 2026
|
Opaleye Management Inc. | Exited· Q1 2026 | – | −930K | −100.0% | Q1 2026 | |||||
|
Catalio Capital Management, LP
· Added
Change
+755K
Date
Q1 2026
|
Catalio Capital Management, LP | Added· Q1 2026 | – | +755K | – | Q1 2026 | |||||
|
Millennium Management LLC
· New
Change
+421K
Date
Q1 2026
|
Millennium Management LLC | New· Q1 2026 | – | +421K | – | Q1 2026 | |||||
|
Affinity Asset Advisors, LLC
· Reduced
Change
−390K
Date
Q1 2026
|
Affinity Asset Advisors, LLC | Reduced· Q1 2026 | – | −390K | – | Q1 2026 | |||||
|
Avidity Partners Management LP
· Added
Change
+329K
Date
Q1 2026
|
Avidity Partners Management LP | Added· Q1 2026 | – | +329K | – | Q1 2026 | |||||
|
Braidwell LP
· Exited
Change
−303K
Δ Own
−100.0%
Date
Q1 2026
|
Braidwell LP | Exited· Q1 2026 | – | −303K | −100.0% | Q1 2026 | |||||
|
Vanguard
· Added
Change
+303K
Date
Q1 2026
|
Vanguard | Added· Q1 2026 | – | +303K | – | Q1 2026 | |||||
|
Exome Asset Management LLC
· Exited
Change
−296K
Δ Own
−100.0%
Date
Q1 2026
|
Exome Asset Management LLC | Exited· Q1 2026 | – | −296K | −100.0% | Q1 2026 | |||||
|
Acorn Capital Advisors, LLC
· New
Change
+288K
Date
Q1 2026
|
Acorn Capital Advisors, LLC | New· Q1 2026 | – | +288K | – | Q1 2026 | |||||
|
Ameriprise Financial Inc
· Exited
Change
−277K
Δ Own
−100.0%
Date
Q1 2026
|
Ameriprise Financial Inc | Exited· Q1 2026 | – | −277K | −100.0% | Q1 2026 | |||||
|
Eversept Partners, LP
· New
Change
+276K
Date
Q1 2026
|
Eversept Partners, LP | New· Q1 2026 | – | +276K | – | Q1 2026 | |||||
| Insider | Title | Type | Price | Qty | Value | Owned | ΔOwn | Trade date | Filed date | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Oliger Christy J.
· Director
Grant (A)
16K
|
Oliger Christy J. | Director | Grant (A) | – | 16K | – | 16K | – | May 21, 2026 | May 26, 2026 | |||||||||
|
Pakianathan Deepika
· Director
Grant (A)
16K
|
Pakianathan Deepika | Director | Grant (A) | – | 16K | – | 16K | – | May 21, 2026 | May 26, 2026 | |||||||||
|
Schor Chen
· Director
Grant (A)
16K
|
Schor Chen | Director | Grant (A) | – | 16K | – | 16K | – | May 21, 2026 | May 26, 2026 | |||||||||
|
Su Zhen
· Director
Grant (A)
16K
|
Su Zhen | Director | Grant (A) | – | 16K | – | 16K | – | May 21, 2026 | May 26, 2026 | |||||||||
|
Bohlin Garen G.
· Director
Grant (A)
16K
|
Bohlin Garen G. | Director | Grant (A) | – | 16K | – | 19K | – | May 21, 2026 | May 26, 2026 | |||||||||
|
Greene Barry E.
· Director
Grant (A)
16K
|
Greene Barry E. | Director | Grant (A) | – | 16K | – | 16K | – | May 21, 2026 | May 26, 2026 | |||||||||
|
Poulton Stuart
· Officer
Sell
−$4K
|
Poulton Stuart | Officer | Sell | $9.50 | −403 | −$4K | 95K | – | May 14, 2026 | May 15, 2026 | |||||||||
|
Rangwala Reshma
· Officer
Sell
−$4K
|
Rangwala Reshma | Officer | Sell | $9.50 | −408 | −$4K | 57K | – | May 14, 2026 | May 15, 2026 | |||||||||
|
Cheng Sohanya Roshan
· Officer
Sell
−$3K
|
Cheng Sohanya Roshan | Officer | Sell | $9.50 | −324 | −$3K | 108K | – | May 14, 2026 | May 15, 2026 | |||||||||
|
Abate Kristin
· Officer
Sell
−$504
|
Abate Kristin | Officer | Sell | $9.50 | −53 | −$504 | 24K | – | May 14, 2026 | May 15, 2026 | |||||||||
|
Paulson Richard A.
· Director
Sell
−$21K
|
Paulson Richard A. | Director | Sell | $9.50 | −2K | −$21K | 270K | – | May 14, 2026 | May 15, 2026 | |||||||||
|
Mano Michael
· Officer
Sell
−$3K
|
Mano Michael | Officer | Sell | $9.50 | −266 | −$3K | 94K | – | May 14, 2026 | May 15, 2026 | |||||||||
|
Poulton Stuart
· Officer
Grant (A)
896
|
Poulton Stuart | Officer | Grant (A) | – | 896 | – | 95K | – | May 13, 2026 | May 15, 2026 | |||||||||
|
Rangwala Reshma
· Officer
Grant (A)
947
|
Rangwala Reshma | Officer | Grant (A) | – | 947 | – | 57K | – | May 13, 2026 | May 15, 2026 | |||||||||
|
Cheng Sohanya Roshan
· Officer
Grant (A)
947
|
Cheng Sohanya Roshan | Officer | Grant (A) | – | 947 | – | 108K | – | May 13, 2026 | May 15, 2026 | |||||||||
N
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A
79 reporting institutions disclosed KPTI position changes in the Q1 2026 snapshot.
For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.
An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.
Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.
Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.
A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.